SECURITY REPORT · EXTENSHI SCAN
Client Challenge
Firefox extension·by 私立メロン高校パソコン部
77
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
Client Challenge's safety score vs every other extension we've scanned
Globally
31%of extensions carry more risk
Riskier ←→ Safer
Ranked against 402,632 extensions
In Other
10%of other extensions carry more risk
Riskier ←→ Safer
Ranked against 28,711 other extensions
Findings
9
median 3Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
3
median 3Declared in manifest
Active users
6
median 2vs category median
Findings breakdown
Automated security signal · 9 distinct issues across 6 severities
9
distinct issues
detected
detected
Critical111%
High222%
Needs Review00%
Medium444%
Low222%
Info00%
Permissions requested
2 risky permissions of 3 total
2 high-risk permissions require attention
This extension requests 3 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Manage downloads
Can initiate downloads and access your download history
Info
*://*/*/
No additional information available.
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Scan performed by extenshi.io · Aug 25, 2026
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